JPH0324667B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a copying apparatus that feeds a document to an exposure position and automatically discharges the document after exposure to copy the document image.
Conventionally, in copiers that automatically feed a sheet-shaped original to the exposure position, make copies of the desired number of sheets, and then automatically eject the original after copying is complete, the feeding and ejection of the original is controlled according to the copying operation. Ta. Therefore, if the copying operation is interrupted due to a conveyance abnormality such as out of paper or jam, before the desired number of copies are completed, the document feeding and discharging operation is also stopped. Therefore, when restarting copying, the operator has to manually remove the document at the exposure position, which causes trouble to the operator and causes a delay in restarting copying. The present invention has been made in view of the above points, and its purpose is to facilitate document processing when operation is interrupted due to sheet conveyance abnormality, no sheet, etc., and to quickly resume copying. The purpose of this invention is to provide a copying device. That is, the present invention provides a document conveying means for feeding a document to an exposure position and ejecting the document from the exposure position after completion of exposure, a setting means for setting the document conveyance means to an operation mode, and a signal indicating that the document is at the exposure position. a storage means capable of storing a plurality of sheets; a copying means for copying an original image onto a sheet fed from the storage means by exposing the original at the exposure position; and a desired number of copies. a data input means for inputting data related to the data, a storage means for storing the number data input from the data input means, a key input means capable of clearing the number data stored in the storage means, and a key input means capable of clearing the number data stored in the storage means. a first control means for operating the document transport means to eject the document from the exposure position after a desired number of copy operations based on the data; When an input command is received from the key input means when the operation is interrupted due to a conveyance abnormality or a state where there is no sheet in the storage means, a signal generated from the signal generation means is determined, and the signal is determined to indicate that there is a document at the exposure position. The present invention provides a copying apparatus comprising: a second control means for operating the document conveying means in response to the input command to forcibly eject the document from the exposure position. FIG. 1 is a sectional view of a copying apparatus to which the present invention can be applied. The surface of the drum 11 is made of a three-layer photoreceptor using a CdS photoconductor, is rotatably supported on a shaft 12, and starts rotating in the direction of an arrow 13 in response to a copy command. When the drum 11 rotates to the normal position, the document placed on the document table glass 14 is illuminated by an illumination lamp 16 that is integrated with the first scanning mirror 15, and the reflected light is used for the first scanning. Mirror 15 and second
It is scanned by a scanning mirror 17. First scanning mirror 1
5 and the second scanning mirror 17 move at a speed ratio of 1:1/2, so that the document is scanned while the optical path length in front of the lens 18 is always kept constant. The above reflected light image shows the lens 18 and the third mirror 19.
After passing through the fourth mirror 20, the exposure section 21
Then, an image is formed on the drum 11. After the drum 11 is charged (for example, +) by a primary charger 22, an image irradiated by an illumination lamp 16 is slit-exposed in the exposure section 21. At the same time, AC or primary charge removal with a polarity opposite to that of the primary charge (for example, 1) is performed using a charge remover 23, and then a high-contrast electrostatic latent image is formed on the drum 11 by full-surface exposure using a full-face exposure lamp 24.
The electrostatic latent image on the photosensitive drum 11 is then transferred to a developing device 25.
It is visualized as a toner image. The transfer paper 27-1 or 27-2 in the cassette 26-1 or 26-2 is transferred to the paper feed roller 28-
1 or 28-2, is roughly timed by the first register roller 29-1 or 29-2, and is moved by a signal obtained from a switch 39 that detects a specific passing position of the optical system. At 30, the toner image is sent out toward the photosensitive drum 11 with accurate timing, and the leading edges of the paper and the toner image are made to coincide with each other. Next, while the transfer paper 27 passes between the transfer charger 31 and the drum 11, the toner image on the drum 11 is transferred onto the transfer paper. After the transfer is completed, the transfer paper is guided to the conveyor belt 32, and then to a pair of fixing rollers 33-1 and 33-2, where it is fixed by pressure and heat, and then discharged onto the tray 34. After the transfer, the surface of the drum 11 is cleaned by a cleaning blade 35 made of an elastic blade, and the process proceeds to the next cycle. In addition, in order to control the above image forming cycle at each point in time, a drum clock pulse DCK is generated by a sensor 11b that optically detects the clock point of a clock board 11a that rotates with the rotation of the drum 11. In addition, as a cycle to execute the above copy cycle, the drum 11 is turned on after turning on the power switch MSW.
There is a step in which residual charges and memory on the drum 11 are erased using a pre-exposure lamp 223, a pre-AC static eliminator 222, etc., and the drum surface is cleaned using a cleaning roller and a cleaning blade 35. Hereinafter, this will be referred to as forward rotation. This is to make the sensitivity of the drum 11 appropriate and to form an image on a clean surface. Incidentally, the time (number) of the pre-rotation described above can be automatically changed according to various conditions. In addition, as a cycle after the number of copy cycles set by the numerical key 50 has been completed, there is a step in which the drum 11 is rotated several times and residual charges and memory on the drum are removed using an AC charger 23 or the like to clean the drum surface. . Hereinafter, this will be referred to as post-rotation. This is to leave the drum 47 electrostatically and physically clean. Reference numeral 41 denotes a surface potential meter installed close to the drum to measure the surface potential at the center of the drum, which detects the potential using an alternating current waveform obtained by rotating a cage-shaped rotating body, and compares it with a predetermined value. It is used to optimally set the container bias voltage of the developing device 25, and has a motor that rotates a rotating body. It also has optical system cooling fans (not shown) on the right and left sides of FIG. 1, as well as a blower, an intake fan, and an exhaust fan for cooling the interior of the machine, which perform control operations in conjunction with the process sequence. In addition, a door switch (not shown) is provided that is turned on when both the upper left door and front door of the main body (Fig. 1) are closed, and when the door switch is turned off, the power supply to the device is cut off except for the drum heater, similar to a power switch. It will be done. However, when a jam occurs, the display power and control power are maintained even if the door switch and power switch are turned off. Further, a micro switch that is turned on and off depending on the top and bottom of the document cover 226 is provided near the top and bottom supporting points of the cover to indicate if a document has been left behind. In the figure, reference numerals 36 and 37 are sensor groups for detecting skew of copy paper and misfeeding of paper from the cassette, and each sensor group includes three photoelectric reflective sensors arranged in a row. 35 is a photoelectric reflection type sensor for detecting a paper jam up to the transfer section;
0 is a sensor for detecting a paper jam near the fixing section and discharge section, and is a photointerrupter that detects the movement of a lever movable by the paper in a photoelectric transmission manner. 42 and 43 are micro switches for determining the presence or absence of upper and lower cassettes and the cassette size;
-2 is a sensor using lamps and CdS for detecting the presence or absence of paper in the lower cassette. 46 is a thermistor for controlling the temperature of the surface of the fixing roller at a constant level, and 47 is a reset switch for resetting a state in which restart of copying has been prevented by a jam or the like. Reference numeral 24 denotes a blank lamp that is lit when the original is not exposed, and irradiates the drum surface simultaneously with AC to eliminate uneven charging on the drum surface. 225 is a sleep roller with a built-in magnet for applying toner to the drum surface. 38 is a Hall element provided at a predetermined position corresponding to the first mirror stop position before starting, 48 and 39 are first
Hall element installed in the middle of the mirror forward path, the first
As the mirror moves, a magnet installed on its base is activated and outputs a high-level signal when it approaches the mirror.The signals are used to control the stop of the optical system, operate the paper feed roller, and illuminate the document. This is a condition for controlling the lighting of the lamp and controlling the operation of the registration roller. FIG. 1-2 shows an automatic document feeder 80 (hereinafter referred to as ADF) except for the document cover 14 shown in FIG. 1-1.
The ADF is mechanically detachable from the copier and electrically connectable with a connector. In the figure, 81 is a bucket part on which a thin original is placed;
Reference numeral 2 denotes a feeder unit that feeds a single original document, 83 a setter unit that sets the original document on the document table 14, 84 a document transport belt, 86 a stopper that stops the original document, and 84, 85, 90, and 91 automatic feeders. This is a photoelectric sensor that detects the arrival and passage of documents to contribute to feeding control. After storing the original in the bucket section 81 and turning on the power of the copying machine, the mode switch of the ADF operation section is turned on. When the wait time of the copying machine has elapsed, the lamp of the mode switch is turned on, and the bottom document in the bucket section is separated by the separating roller 87 and delivered to the feed roller 88. The roller 88 is operated at a predetermined timing for the time required to feed one sheet, and the document is fed to the belt 89 rotating on the document platen 14. The document caught on the belt 89 is fed at a predetermined timing until it reaches the claw 86, which is lowered, and is stopped there. The belt 89 rotates a little further and stops at a predetermined timing. The belt 89 slides on the document until it stops. Then, the lamp 16 and mirrors 15, 17 of the copying machine start to move forward, and the original is scanned and exposed, and a copy is obtained on transfer paper as described above. When the number of copies set using the numeric key 50 (described later) is completed, the end signal (ADF off signal) is activated.
The document is sent to the ADF 80, raises the claw 86, rotates the belt 89 again, and discharges the document from the platen 14. Along with this discharge operation, the rollers 87 and 88 are operated to feed the next document toward the belt 89. In this manner, originals are exchanged one after another and copies are repeated. Furthermore, 9 in ADF80
0 is a detector for detecting whether or not a document is placed on the bucket section; 84 is a detector for detecting whether the document is fed diagonally to the setter section; 85
A detector 91 for detecting the document at the exposure position is a detector for detecting discharge of the document. Detector 8
Reference numerals 4, 85, 90, and 91 are reflective types in which a plurality of light emitting diodes are used for one light receiving element.
However, it may be of a transmission type or may be a mechanical sensor such as a micro switch. Also belt 89
The belt is grounded to the main body in order to remove static charges that are generated and accumulated on the belt when the original is held and conveyed. Further, the ADF 80 is rotatably set from the front side to the opposite side of the copying machine so that it can be separated from the platen 14. The ADF 80 is provided with a switch that automatically cancels the operation of the ADF when the ADF 80 is separated. This prevents the ADF80 from being activated by mistake. In this state, a thick original can be placed on table 14 and a copy can be made. Also, place a thin original on the table 14 and use AF8.
When the original is set to 0 and the copy button is turned on, a set number of copies are made, and after the copying is completed, the original is automatically ejected. FIG. 2 is a plan view of the main body operation section. Let me explain this. Numerical keys 50 are used to set the desired number of copies, and this key allows a two-digit number to be entered. The number can be set when copying is stopped and the end mode (hereinafter referred to as rotation mode) is entered, and when the paper is jammed or a serviceman is called (described later), the number cannot be set even if the key is turned on.
When the number is entered, an oscillating sound is generated and the number is displayed on the segment display 72 for displaying the number of cassettes. Note that the number of keys is stored in memory (described later). Reference numeral 56 is a stop key, which is used to stop the continuation of copying and also to cancel copy interruption. After copying is started using the copy key, when this key is turned on during the initial mode (referred to as forward rotation), the drum continues to shift to rear rotation mode, rotates once, and then stops. When the forward movement key of the optical system is turned on, the current copying process is ended and the drum is stopped. When turned on while the optical system is moving forward, the drum is stopped as described above after copying the next copy. If this key is turned on after issuing an interrupt copy command and before starting the copy, the interrupt display lamp will be turned off, and the number of saved sets and copies will be read out (hereinafter referred to as recall) and displayed using the interrupt key. If this key is turned on during interrupt copying, the current process is terminated, the drum is stopped, and recall and display are performed in the same manner as above. Reference numeral 51 denotes a clear key for clearing the numbers entered using the numeric keys. This clears both the set number display and the copy number display, and displays 1 and 0 instead. Reference numeral 52 is an upper stage designation key for feeding paper from the upper stage paper feed cassette, and 53 is a lower stage designation key for feeding paper from the lower stage paper feed cassette. Based on this designation, the paper feed roller to be operated at the paper feed timing is selected. Reference numeral 54 is a copy key for starting a copy operation, and this key cannot be input when copying is disabled. The times when these keys 51, 52, and 53 can be accepted are approximately the same as those of the numerical keys described above. The details will be described later. Reference numeral 55 is an interrupt key for interrupting multiple copies while the set number is being copied; when the key is turned on while the drum is stopped, the set number and copy completed number on the display are saved in memory and 1 and 0 are displayed instead. let When the key is turned on during copy execution, the current process is terminated, the drum is stopped, and the same evacuation and display as described above are performed. The number of interrupt copies can then be further set by inputting the numerical keys. After that, you can turn on the copy key to start interrupt copying. If all of the above keys are paper jams or serviceman calls, no input will be made even if they are turned on. Furthermore, when the above keys are accepted, they output a short-time oscillating sound, similar to the case of numerical keys. Reference numeral 62 denotes a lamp for displaying a warning that a document has been left behind, which lights up when the process starts rotating later, and turns off when the document cover is opened. Reference numeral 58 denotes a lamp that is displayed when a key counter for counting the total number of copies is not set in the main body, and when this lamp is lit, no copy key is accepted.
If lit during multi-copy, the copy operation will be interrupted. Reference numeral 59 is a serviceman call lamp that indicates when a malfunction occurs in the main body of the machine, and as described later, it is activated when a malfunction of the sequence control board, malfunction of the halogen lamp ballast, abnormal temperature rise of the document table surface, etc. is detected. to stop the machine. Inside the main body, the location of the failure is indicated by light emitting diodes A to F (Fig. 1). Reference numeral 60 denotes a lamp that lights up when the toner in the hopper is empty. It has nothing to do with machine operation. A lamp 62 is lit when no cassette is set in the cassette stage designated by the key 52 or 53, and is lit when the set cassette runs out of paper. 70 is the copy paper size in the upper cassette, 71
is a lamp to indicate the paper size in the lower cassette. 72 is a 7-segment display that displays the number set by the key 50, when the power is turned on, when an interrupt command is issued,
When the set number is cleared, 1 is displayed, and when the main switch is turned off or the door switch is turned off when jammed, the previous value is retained even if the display disappears. Also, after copying is stopped when the stop key is turned on, the display retains the previous number after copying is stopped when there is no paper, but if the copy key is not turned on within 30 seconds after the stop key is turned on or the desired number of sheets is reached and copying is stopped, 1 is displayed. . In either case, the upper digit 0 is not displayed. Further, a display 72 is provided on the main body board, and displays the number of codes of faulty sensors detected in the sensor diagnostic operation performed by the self-diagnosis switch. That is, the skew feed detection sensors from the upper cassette are displayed as 1 to 3, those on the lower cassette as 11 to 13, the transfer sensor as 4, the ejection sensor as 5, the registration sensor as 6, and 88 as no abnormality. 73 adds up and displays the number of copy sheets stored in the tray. The value changes when the optical system is reversed, and does not change when copying is interrupted due to paper out, etc., but becomes 0 after interruption by pressing the stop key or 30 seconds after the desired number of copies is reached and copying is stopped. If the copy key is turned on within that time, the previous value is set to 0 and then added and displayed. In addition, unless the above-mentioned stop key is used to interrupt the copying process or after the desired number of copies has been reached and copying is stopped, the previous value is increased by 1. Displays 0 at power-on, interrupt, and clear. When jammed, it is set to -0, -1, or -2. The upper digit 0 is not displayed. When the main switch or door switch is turned off during a jam, the display disappears, but the previous value is retained. Reference numeral 74 indicates an interrupt lamp that is turned on when an interrupt key is input, and is turned off at the same time when an interrupt is canceled while the stop key is at rest; and when an interrupt is canceled during a cycle, the lamp is turned off after the current copy cycle is completed. 75 is a wait lamp to prevent the copy key from being input, and is lit when the fixing device is at a low temperature. Reference numerals 64 and 76 designate lamps that are turned on when a paper feed error or paper jam occurs in the copy paper path. Reference numerals 65 to 69 are lamps that flash to indicate the location where a paper feeding error or paper jam has occurred at the same time as any of the above lamps is turned on, and one of the lamps 66 to 69 flashes ( (Others are left on), indicating the specific location of the occurrence. At this time, the segment display 73 is set to -0, -1, or -2 to display the number of copies previously stored in the tray, and the operation of the main body is interrupted and all servers are not accepted. Reference numeral 76 lights up when paper is not fed from the cassette at the paper feed port or when paper is fed obliquely, lamps 65 to 69 light up, and 66 blinks. Then, restarting copying is prevented. In this case, the blocking is released by removing the cassette 26 shown in FIG. 1 and removing the paper on the paper detection sensor.
64 lights up when a paper jam occurs in the machine body, and the line mark 65 blinks, and when the paper is jammed on the path leading to the drum, 67 is lit, and the line mark 67 lights up when paper is jammed on the path from the drum to the fixing device. 6 when there is
8, and 69 flashes when there is a jam near the fuser. Then, restarting copying is prevented. Unblocking in this case is carried out by opening the door of the main body, removing the jammed paper, pressing the reset button 47 inside the main body, and closing the door. Reference numeral 77 is a sliding variable resistor for varying the gopy concentration, and by changing the amount of current supplied to the halogen lamp 16 by this resistor, the amount of light is changed and the density is adjusted. FIG. 3 is a control block diagram of an exemplary image forming apparatus according to the present invention. In this example, two program CPUs (one-chip microcomputers) are used in the control section of the copying machine, one of which is mainly used for sequential control such as controlling the copying process operation, and the other is used for determining input such as the copy key, displaying segments, etc. It is used for real-time control. As a result, it is possible to reduce display flickering during copying operation control, which tends to occur when a single program CPU performs all operations, to prevent erroneous key inputs, and to prevent such copying control operations. In the figure, _Q1 is a CPU (hereinafter referred to as a management computer) for performing the above-mentioned real-time control, and _Q2 is a CPU (hereinafter referred to as a two-sequence control computer) for performing the above-mentioned sequential control. DKY is the input key and various displays provided in the copying operation section shown in FIG. Furthermore, in this example, a computer Q ₃ is provided in the ADF itself to control the operation of the ADF, and this is connected to the copier computer (management computer Q ₁ ) to control the ADF operation.
The computer Q ₄ is installed in the sorter itself to control the operation of the sorter that binds the ejected transfer paper into volumes.
This is connected to a copying machine computer (sequence control computer Q ₂ ) to control paper distribution and copying of the copying machine. As a result, the above-mentioned terminal computer with a copier computer as the center can be used for ADF, sorter, microfilm enlargement copying system, received image copying (printing) system (facsimile), large computer data printout system (printer), etc. By providing this, it becomes possible to easily attach it to a copying machine. FIG. 4 shows an example of control contents on the copying machine side of the present invention, and Q ₁ , Q ₂ , Q ₃ and Q ₄ are controllers composed of well-known one-chip microcomputers corresponding to each computer in FIG. 3. ,Each,
Memory (ROM) that stores control programs, control data such as flags, input data such as the number of copy sets, and memory (RAM) that temporarily stores output data for displaying sequence operations, etc. The number of sets etc. is stored using keys. Latch register (I/O) input data for inputting to the CPU and outputting load operation signals such as drum motors from the input port.
It has an arithmetic processing unit (ALU) that reads data into the CPU, stores it in RAM, performs discrimination, and generates a predetermined output from an output port, and is configured as a single semiconductor element. The ROM in the management computer _Q1 records the control procedures (key entry, dynamic display of segments, diagnosis, jam conversion, sequence judgment, etc.) shown in the flowcharts shown in Figs. 15-1 to 15-3 in a coded manner. This is a mask ROM whose contents cannot be converted. The ROM in _Q2 for sequence control includes the control procedure (drum clock count, paper trouble detection such as jam, skew, etc.) as shown in the flowchart shown in Figure 7, and the timing data on/off of process load and criteria for determining paper trouble. This is a masked ROM whose contents cannot be changed, in which information such as drum clock counts, etc.) is encoded and stored. Also ADF
The ROM in the computer _Q3 is a similar mask in which the control procedures (feeding, ejection, etc.) shown in the flowchart shown in Fig. 16 are coded and stored.
It is ROM. The IN of each computer is an input port that takes command data and detection data into the CPU.
OUT is an output port that outputs control data, INT
is an input interrupt port. In the figure, 101 is a matrix circuit (multiplexer) for inputting the data of 16 operation keys to the input ports 0 to 3 of the management computer _Q1 , and the probe signal (digit switching signal) for the entry is output to the output port 13. ~
16. 0 to 9 are the contact points of the numerical keys,
C, STOP, interrupt, copy, up and down are each clear key, stop key, interrupt key, copy key,
This is the contact between the cassette upper row designation key and the cassette lower row designation key, and closes when the key is turned on. _Q4-1
~Q ₄ -3, Q ₅ -1 ~ _{Q 5} - ₄ , Q ₆ - ₁ , Q ₆ - ₂ are each sensor signal to perform the diagnostic test described later, Q _3
-1 to _Q3-4 are AND gates for inputting the jam detection signal from the sequence controller _Q2 to the management computer _Q1 , and 102 is a well-known 7-segment display composed of segment LEDs, which corresponds to 72 and 73 _. It has 4 digits. 103
is a segment decoder that converts codes for display. Probe signals 13 to 16 are repeatedly output as pulses without overlapping output timings, contributing to dynamic input and display. For example, when outputting 1 from output port 14, input port 0
If 1 is entered in , it means that 4 on the numeric keypad is turned on. This probe signal is input to each digit of the segment display 102, and for example, at the set probe pulse time, the signal of port 14 and the 1, 1, 1, 0 signals of ports 9 to 12 are input to 2 of the set number display. Display 7 in the digit. This display changes the display in response to numeric keys, start keys, stop keys, interrupt keys, process timing, etc. For example, when copying 23 sheets, switch the power switch SW2.
When turned on, the set number display 20 and copy number display 22 first display 01 and 00, respectively, and then turn on keys 2 and 3 in turn to display 03 and 00,
23,00 is displayed. When the copy start key is on, the value remains 23,00, and when the optical system is reversed for the first copy, 23,01 is displayed.After that, 23,n is displayed every n reversals, and when 23 sheets are fed, 23,01 is displayed.
Display 3, 23. The copy operation is stopped when the copy key is not turned on again before the copy ends. Then, 01 and 00 are displayed. However, when the copy key is turned on, 23,00 is displayed at the time the copy key is turned on. If the interrupt key 55 is turned on at the 10th copy during copying, the display changes from 01, 00 to 23, 10. If you turn on the further number key 5, 05,00
is displayed and start copying 5 sheets by pressing the start key. Then, when reversed once, 05, 01 will be displayed,
When it is reversed five times, 05, 05 is displayed, and then 23, 10 is automatically displayed again. After that, 23, 11...23, 23 will be displayed by pressing the start key. Also, stop key 56 while interrupt copying of 5 sheets is in progress.
When turned on, the execution is interrupted, the numbers 23 and 10 before the interruption are displayed on the display, and then the remaining copies are executed by pressing the start key. (Input operation) Turn on power switch 9. At this time, if the temperature of the fixing heater is below the specified value, the wait lamp 75
lights up. Raise the document table cover 226, place the document face down on the glass, and align it with the size index on the platen 14. Using the cassette selection keys 52 and 53, select the stand (upper or lower) containing the cassette to be used. When the power switch MSW is turned off and then turned on again, the lower cassette tray is automatically selected.
It is convenient to set the cassettes you use most often on the lower shelf. Adjust the copy density lever 77 according to the original (standard is 5, and if you want to make it darker or lighter, set it to 9 or 1).
Set the required number of copies (1 to 99 copies) using the numeric keypad 50, check it on the cassette number display 72, and then
Turn on the start key 54. If the number of sheets cannot be set by pressing the numeric keypad, or if the number of sheets set is incorrect, press the clear key 51 and set again. Display 01,00. After copying starts, no changes can be made by pressing the clear key, numeric keypad, or upper/lower cassette selection keys from the time the document illumination lamp turns on until the final copying optical system is reversed. If the paper out indicator in the cassette lights up during copying and the copying operation stops, set the copy paper, set the cassette in the main unit again, and then press the copy start key to automatically calculate the number of remaining sheets. Copied. If you want to stop copying during continuous copying,
When the copy stop key is pressed, the copy operation at that point is completed and then stopped. The number of copies displayed is
It then shows the number of copies and stops. Next, when the copy start key is pressed, the number of copies will be displayed starting from 00, and the set number of copies will be automatically copied. In the case of interrupt copying, the operations and displays described above are performed. The number of copies at that time is determined by the interrupt key.
The number of sets and cassette stages are the memory in the CPU.
Stored in RAM. While copying is interrupted, open the document table cover, replace the document, set the number of interrupt sets, and also select the cassette size (column) (display the selected column and the cassette size in that column). When a predetermined number of interruptions have been copied, the content displayed on the display is automatically changed to the content saved in the memory as described above. The cassette size indicator also displays the original tray size. If you want to stop the copying operation during continuous copying, press the copy stop key to stop the copying operation at that point and instantly display the set number of copies when the optical system is reversed or after it is reversed. ,
The size display and row display return to the display before the interrupt. It doesn't matter if you press the interrupt key during interrupt copying. After the set copy number display is restored, Γ
By pressing the interrupt key, interrupt copying can be performed again. If you press the Γ clear key, it will be cleared to 01,00. Γ If the copy stop key is pressed, the set copy number display will not change, but if the copy start key is pressed, the copy number display will start from 00. The flag that is set (set to 1) at a set address in the RAM of the management controller _Q1 will be explained.
The flag determines the course of the control steps in the execution of the flowchart shown in FIG. 15, and is hereinafter abbreviated as F/. Flags H ₀ to _{H 5} are digit signal switching flags and are reset according to the outputs of output ports 13 to 18. F/JAM is a jam flag that is set when a jam is detected, and F/FULL is set when the cassette is full size. According to the full size flag, the reset state means half size.
F/STOP is a stop flag that is set when the sequence operation enters stop mode (when there is no paper or jams), F/COPY is a copy flag that is set after the start of copying until the set number optical system starts to reverse, and F/DF. are flags that are set from the start to the end of copying by ADF, F/A, F/
B, F/C are flags set for each section in Figure 5-3, F/D is set at the end of copying and reset 30 seconds later, F/E is set during post-rotation,
F/F is set during rotation after completion of set number copy, F/G is set in the section marked with ○ in Figure 15-3,
F/H is a flag that is set when the copy start signal is input, F/interrupt is set when the interrupt key is input during the circle in Figure 15-3, and F/interrupt is the flag that is set when the interrupt key is input during copying. Flag set when is input, F/OVF (F/OVF is after interrupt)
is set by two key entries, F/INTL
(F/INTL' after an interrupt) is set when 1 is input, F/Up/Down is set when the upper cassette is specified, F/KEY1 to F/KEY4 are set when a key is input, each flag The recut timing is clear in the flow of FIG. or
The RAM stores the copy set number in 8 bits (referred to as counter SET).
The part that counts and stores bits (counter)
(referred to as COPY), a part that counts and stores the drum clock pulse CL in 8 bits (referred to as counter
CNT), buzzer counter L, etc. 5-1 and 5-2 are time charts of the control signal, detection signal, etc. in FIG. 4, and indicate the operating state of the controlled object and the detector when the signal is at a high level. 5th-
Figure 1 is half size, 3 consecutive copies, No. 5-2
The figure shows the case of continuous copying of two full-size sheets. S ₁ to S ₁₅ and OHP, RG are the output signals and input signals of sequence controller Q ₂ in Fig. 4, and CL,
CPOS, A, B, and C correspond to inputs of the management and sequence controller. CL ₁ and CL ₂ indicate the operating status of the forward clutch and reverse clutch,
COPYCNT is a counter memory for the number of copies in RAM, and the number in the figure indicates the number of copies at that time. This is displayed on the display 73. timer T ₂
~ _T6 is a timer for determining the paper jam at each location on the feeding path, and _T1 is a timer for checking the delay jam reaching the ejection sensor 4 at the time shown in the figure.
_T3 is for checking the retention jam on the sensor 40 at the timing, _T4 is the paper feed section sensor 36,
37 is a timer counter for checking the skew feed timing, and _T5 is a timer counter for checking the delay jam reaching the transfer section sensor 35 at the _timing .
The numbers in Figure 5-2 that use part of the RAM are the counts of the drum clock CL, the sequence counter CNT in the RAM, and the timer counter mentioned above.
Obtained by T ₂ and T ₅ . Such pulse counting operation is performed by program processing according to the flowchart described later. In Figure 4, sequence controller Q ₂
The output signal S' ₁ is a signal for turning on and off a main motor (not shown) in order to control the rotation of the drum 11, and is input to a well-known motor circuit M ₁ that drives the motor via a driver circuit 400 in FIG. 14-1. has been done. _S2 is a signal that turns on the solenoid for lowering the constantly rotating paper feed roller 28-1 or 28-2 into the cassette, and is input to the solenoid _S1 via the driver circuit 401 in Figure 14-1. Ru. S ₃ and S ₄ are first registration rollers 29-1, 29
-2, a signal that turns on the clutch to rotate the second registration roller 30, which connects the clutch C ₁ ,
Designated as C ₂ . _S5 is a signal for controlling the lighting of the halogen lamp 16, and is inputted to the triac Trc shown in FIG. 145 via the driver 403.
S ₆ and S ₇ are signals for turning on the clutches in order to move the optical system 15, 16, and 17 forward and backward by the main motor, and the drivers 404 and 40 in Fig. 14-1 respectively.
5 to the clutches CL ₁ and CL ₂ . S ₁₂
is a signal for rotating the toner stirring motor in the developing device 25, and is input to the motor circuit _M2 via the driver 406. S ₈ and S ₉ are signals for lighting each blank lamp 224 and full-surface exposure lamp 24, and are input to a well-known lighting circuit (not shown).
_S10 is a signal for changing the discharge state of the AC corona charger 23, and is input to a well-known switch circuit that turns on and off the grid voltage of the AC high voltage transformer. _S11 is a signal for turning on and off a high voltage transformer for differentially controlling the front AC corona charger 222, primary corona charger 22, and transfer charger 31, and is input to a well-known switch circuit that turns on and off the primary side of the transformer. S ₁₃ is surface electrometer 41
This is a signal that controls the detection operation of , and is input to the detection circuit of the electrometer 41 in FIG. 14-4. S14 is a developing bias signal for controlling the bias voltage applied to the developing device, which is synchronized with the stirring signal _S12 and input to the bias voltage changeover switch. The main motor signal S ₁ also serves as an operating signal for the front path light lamp 223, an operating signal for all fan motors, a primary side operating signal for the high-voltage AC transformer, and a developing bias operating signal. Also, WT of output port 12 is a signal for lighting the wait lamp 75, and HLM of 11
is a signal to be activated when the halogen lamp is abnormally lit, and is input to a well-known lighting circuit to light the call lamp 59 and the LEDF inside the housing. Output ports 15 to 18 also provide signals for blinking the display marks 69, 68, 67, and 66 in FIG. 2 when detecting the discharge section jam, fixing section jam, transfer section jam, and paper feed section jam of each transfer sheet. Then, input ports 0 to ₁ of the management controller Q 1 are input to a well-known display flashing circuit, and the number of jammed sheets is processed and the display is corrected on the display 102.
_The signal is input to gates _Q3-1 to _Q3-4 connected to _Q3 . Next, the input signal of sequence controller Q ₂
OHP and RG are detection signals of the stop position and registration position from the Hall elements 38 and 39 obtained by the reciprocating movement of the optical system, and CPOSB and CPOSC are paper detection signals from the transfer section paper sensor 35 and the discharge section paper sensor 40. , SWS is a switch signal that detects the on/off state of the door switch and main switch, and is obtained from the transistor Tr3 in FIG. CPOS is one sensor 36 that serves as the standard for detecting internal skew of the paper feed section sensor.
-1 or paper detection signal from 37-1, CPOS2,
3 is another sensor 36-2, 36-3 or 37-
2, paper detection signals input sequentially from 37-3;
RS is a signal from the jam reset switch 47 for canceling a copy inhibited state caused by a jam, etc., and is obtained from the circuit shown in FIG. WTS is a signal to prevent copying until the fixing heater reaches a predetermined temperature, and is obtained from the temperature detection circuit (FIG. 6). The cassette signal ~ is a cassette insertion/removal switch 42 for determining the cassette size.
Or, the signal obtained by 43 is inputted to FIG. PEP is connected to the circuit of the light receiver 44-2 or 45-2 in response to a detection signal indicating that there is no paper in the cassette. DCP is a drum clock detection signal based on repeated pulses from the light receiving element 11b. Each of the above detection signals is obtained from a circuit as shown in FIG. Input signal of this sequence controller
CPOSC (paper discharge signal) is sorter controller Q ₄
It is also input and used to control the distribution pins (sorter shelves). When a sorter is connected, a preparation signal from a sorter controller is also input as a wait signal WTS, so that copying is started only when the transfer paper sorter is fully equipped. Next, the output signal BZ of the management controller _Q1 is a buzzer sound signal for generating an oscillating sound every time an input is made by the key circuit 101, and is input to a well-known buzzer oscillation circuit. IRD is a signal that lights up the display 74 when the copy interrupt key 55 is accepted, OFD is a signal that lights up the display when a document is placed on the platen 14, and CHD is a signal that lights up the display when the diagnostic key 49 is accepted. All well-known LEDs are used as a signal to light up
Input to the lighting circuit. CHBC is a signal for checking each sensor mentioned above, and gates Q ₆ − ₁ and Q ₆ −
₂ is input. DFE is an enable signal indicating that A'DF is operable, and is input to the ADF controller. UL is a signal for switching the cassette stage to be fed and is input to the cassette control circuit shown in FIG. STAT is a copy start signal generated by a copy key or the like and is input to input port 0 of the sequence controller _Q2 . As an input signal to the management controller Q ₁ , other than key entry input, CAL is a signal input when various load or circuit status abnormalities are detected.
Obtained from the circuit shown in figure. STB is a standby signal indicating that the ADF is ready and is obtained from the ADF controller _Q3 . OB is the signal that is input as 0 when the document table cover is opened to check the document placement, and SIZ is the signal that detects the free size or half size of the cassette, as shown in Figure 12.
CHE is a signal that is input as 0 when the diagnostic key 49 is turned on to check the sensor at a set time. Also, the output signal _S8 of the sequence controller _Q2
(blank lamp control), S ₁₀ (AC transformer output control), S ₁₁ (primary transformer control) are input to the management controller Q ₁ for processing such as sequence mode control, key entry control display control, and jam subtraction. Ru. MOD and STOP in ADF controller Q ₃ are signals from mode switch and stop key, 84
Signals S, 85S, 90S, and 91S are signals from the original sensors shown in FIGS. 1-2, and are input to the ADF controller Q ₃ together with the enable signal DFE from the management controller. STB is an ADF standby signal, SM, FEM, and PLS are control signals for the setter motor that drives each belt 89, the feed motor that drives rollers 87 and 88, and the plunger that moves the claws 86 up and down.
DFJ is a jam display signal. The sensors, motors, and display circuits involved in each input/output as described above are sufficient. FIG. 6 shows a wait signal generation circuit, in which the main switch is turned on to start heating the roller heater, and when the temperature sensor 46 detects that the roller display temperature is below a predetermined value, the comparator outputs 0. Therefore, the thyristor SCR remains off, and therefore each input of the gate _G1 becomes 1.0 and the gate output generates the wait signal WT. When the sensor reaches the fixing temperature, the SCR is turned on by the output of the comparator and the output of gate _G1 becomes 1. After that, when the key counter is removed, the gate _G1 outputs 0 and the copying machine is placed in the same state as the wait. FIG. 7 shows a jam reset circuit and a diagnostic switch circuit. When the reset switch 47 in the figure is turned on, the signal RS becomes 0 and a reset signal is generated. Also, when the disconnection switch 49 is turned on (NO side), the diagnostic signal SEA1 is generated and the signal RS is set to 0. In other words, the diagnostic process is executed with the jam reset, that is, with jam detection prohibited. FIG. 8 shows a circuit that generates each detection signal from a paper sensor, a resist sensor, etc., in which the outputs of the light receiver and Hall element are inverted by a transistor _Tr1 , and a 0 signal is used as a detection signal. Figure 9 shows the power supply detection circuit. In the figure, DSW is the switch that turns on when the housing door is opened, MSW is the switch that changes as shown in the figure when the main switch is turned off, and ST ₁ and ST ₂ are the step-down transformers.
The well-known stabilization circuits that rectify, smooth, and stabilize the outputs of T ₁ and T ₂ , FS ₁ and FS ₂ are fuses. Connect the connector to AC power supply and turn on MSW, DSW
In the on state, the transistor Tr ₃ outputs a signal SWS (0) indicating the power on state. When a jam occurs,
When the door switch DSW or main switch MSW is turned off and SWS becomes 1, relay _K1 is activated to switch the power to the stabilizing circuit _ST2 regardless of whether _ST1 is turned off.
Keep ST ₂ on. computer thereby
The number of copies, number of jams, and interrupt data are stored and retained without turning off the power to Q1 _{and Q2} . The output of ST ₁ is connected to the 24V power supply of various circuits, and the output of ST ₂
is connected to the 15V power supply line of the controllers Q ₁ and Q ₂ . When no jam occurs, MSW,
Even if the DSW is turned off and the signal SWS becomes 1, the above holding operation is not performed. Figure 10 shows the signal generation circuit that indicates the lighting status _of the halogen lamp.
6 is operating normally, that is, when the lamp is lit, the photocoupler PHC outputs 0, and when the lamp is not lit, it outputs 1 and inputs it to the input port 1 of the sequence controller _Q2 . Figure 11 shows a timer circuit that automatically changes the set/copy display from 1 to 0 30 seconds after the main motor stops.When the main motor signal _S1 falls, the timer _T10 starts for 30 seconds. A timed operation is started, and 1 is output to gate _Q4 in FIG. 4 until time-up. The management controller Q ₁ holds the segment indication during this signal 1. FIG. 12 is a cassette control circuit, and FIG. 13 is a layout diagram of the microswitch seen from the cassette stage entrance side. 42-1, 42- of the upper switch group 42
Full size, half size and A ₃
In order to determine A ₄ , B ₄ , B ₅ , U ₁ , and U ₂ , each switch signal is sent to controller Q ₂ via selector MP ₁ .
input as a cassette signal. selector
_MP1 operates to select the output of the lower stage switch signal with the cassette stage signal UL of 1. Since the cassette signal is set to 1 when the full size of A3, B4, and U1 is reached (switches corresponding to _A1 and _B1 are turned off), it is used as a full/half discrimination signal SIZ. Also, selector MP ₂ is connected to sensors 44-2, 45
The paper out detection signal at -2 is output as PEP to controller _Q2 according to the stage designation. or
62 is lit by a PEP signal or a cassette no signal with all cassette signals being 1. Also decoder
The signals from the microswitches are decoded into size signals by _D1 and _D2 , and the size lamps at each stage are constantly lit. 14-1 to 14-5 show a diagnostic circuit that constantly monitors the electrical load control circuit and the like. Figure 14-1 shows a driver 400 that drives a sequence load such as a main motor (signal amplification).
This is a circuit for checking for failures of 407 to 407. This will be explained using the main motor as an example. In the figure, G ₂ is an exclusive OR gate for fault determination, and the main motor drive signal S ₁ (A) is input to one of its inputs, and the output (B) of the driver 400 is input to the other. This gate G ₂
produces an output with the logic of ・B+A・,
When the output is 1, flip-flop _FF1 is set, amplifier _Q7 is activated, and relay _K2 is turned on.
The call mark is lit by this relay K2, and the call signal CAL 1 is outputted by TE. Similarly, when another driver fails, the flip-flop _FF1 is set by the change in the output of each gate _G2 to output a call mark and call signal, and the driver failure mark LEDB is lit. This flip-flop _FF1 is set and suspends copying until it is reset at the rising edge of the power switch signal SWS. Fig. 14-2 shows a failure check circuit for the main motor and drum clock generator, and Fig. 14-3 shows an operation time chart of each part. When the pulse CL is not output during the main motor operation signal (output of gate _Q10 is 1) (output of _Q11 is 1), flip-flop _FF2 is set and the amplifier shown in Figure 14-1 is activated.
Activate Q ₇ to output a call signal and light up the LEDA. FF ₂ is reset by SWS. FIG. 14-4 shows a failure check circuit for the surface electrometer 41, which detects an off state using AC output and turns on the LEDC. FET due to the rotation of the rotor of the electrometer 41
The AC signal from Q 20 is amplified by amplifiers Q ₂₀ and Q ₂₁ and Q ₂₃
The signal is rectified by _C20 , smoothed by C20, and compared with a predetermined value by comparator _Q22 . In normal operation, _Q22 outputs 0. When the AC signal tends to stall, 1 is output from _Q22 . At this time, since the main motor signal from _Q10 is 1, NOR gate _G4 changes to 0, flip-flop _FF3 is set, lights up LEDC, and outputs a call signal to _Q7 . FF ₃ is reset by SWS. Figure 14-5 shows the temperature fuse TF of lamp 16.
(provided near the platen 14) detects disconnection and outputs a call signal, detecting overheating of the platen. When TF is cut off, the output of phc2 turns on, turns on transistor Q30, lights up LEDD,
Outputs call signal to amplifier _Q7 . Further, there is a temperature control circuit for the roller heater using a thermistor 46, and a temperature fuse _TF2 is further provided in series with the thermistor 46 at a distance from the roller. Then, the temperature fuse TF ₂ is fused as described above.
It is detected by a circuit similar to the detection circuit of TF ₁ outage, and a call signal is output to amplifier Q ₇ to light up the LEDF. In this way, printed circuit boards and locations important for the safety of the copying machine are constantly checked and copying operations are immediately shut off. FIG. 15-1 is a system flowchart of the program stored in the ROM of the management controller _Q1 . When the 15V power supply of Q ₁ is turned on (step 0)
First, _Q1 outputs a probe signal for key entry and determines whether the diagnostic key 49 is turned on. When it detects that the copy key is on, it determines whether the copy key is on, feeds the paper sequentially from the upper and lower cassettes, executes the normal process, checks for failures in the paper sensor, registration sensor, etc., and then checks the printed circuit board with the failure sensor. The number is displayed on the segment display 73 (steps 1, 2, and 3). Also, a signal that detects whether the numeric key or copy key is on and outputs an oscillating sound to start the copy operation.
Outputs STAT to sequence controller Q ₂ , displays the number, and outputs ADF operation enable signal DFE.
Output to ADF controller Q ₃ . (Steps 4 and 5) Also, it is determined whether _a jam signal, . (Steps 6 and 7) Also, it is determined whether the serviceman call signal CAL has been input to _Q1 , and the start signal STAT and enable signal DFE are reset, and the main motor etc. are immediately turned off to stop the machine. (Steps 8 and 10) It also determines the sequence mode, especially the end mode (post-rotation mode), during the progress of the process sequence, and controls the entry and display of numerical keys, copy keys, and interrupt keys. Figures 15-2 and 15-3 are management controllers
This is a detailed flowchart showing the operation of _Q1 . 15V
After power-on memory, overflow, flags,
Clear the stop flag, put 1.0 into each of the set counter and copy counter, set the flag INTL indicating that the set is set to 1, and proceed to step 4. Steps 4 to 6 are steps in which after a key is detected, the buzzer counter L is incremented by 1 every time the key is passed, and after 16 passes, the counter is set to 0 and the buzzer sound is turned off. belongs to. Flag in steps 10-14
Since H ₀ to _{H 5} are set and reset sequentially each time a probe signal is output, they are not set simultaneously.
Therefore, at a certain timing, input ports 0 to 3 are activated for one key ON or for one jam signal.
One piece of data corresponds to. Therefore, if the flag H ₀ is 0, 1, 2, or 3, if the flag H ₁ is 4, 5,
Either flag 6 or ₇ will read 8, 9, C, or any of the above flags H ₃ will read the bottom, STOP, interrupt, or copy, and flag H ₄ will read the serviceman call or sequence. You will have to make a judgment. That is, the subflows of the above processing performed by determining the digit flag H correspond to C, D, E, F, and G, respectively. Also, in this subflow, entry/display control,
It also identifies control keys and displays faults. Step 15 and subsequent steps are subflow H in which the number of jammed sheets is subtracted from the number of copies and displayed. The number of entries and displays will be explained below. When determining whether a numeric key is on in each subflow, the key flag F/
Set the KEY. For example, in subflow C, F/KEY1 is set by executing steps 161 to 164 to indicate that one of 0, 1, 2, and 3 has been input. At 165, the value is stored in the memory TM in _Q1 .
and overflow flag, already in cassette 1.
(steps 166, 16)
7) If it is set 1, store the number of memory TM in the set memory SET1 (1st digit) excluding the 0 key, display it in the 1st digit of the display 72, and turn on the buzzer signal BZ.
Turn on. When the same number of keys are further turned on, steps 163 to 172 are executed again using the key flag F/KEY1, which was reset in step 175 via step 161. The number stored in the memory TM is stored in the empty SET1 by moving the number of SET1 to SET2 in step 168 (steps 171, 172).Therefore, the first digit of the display 72 is SET1, and the second digit is SET1. Display the number of SET2. At step 168, the overflow flag F/
Since the OVF is set, the third entry will not be accepted. Note that when keys are detected by sub-flows D and E, steps 165 and subsequent steps are executed to carry out storage, display, and buzzer generation as described above. Since digit pulses are constantly occurring at a period of several microseconds, subflow C
-H can be executed in a scanning manner, and inputs such as keys can be sensed in time for key-on and other times. If it is detected in step 160 that the diagnostic key is turned on, the sensor diagnostic flow shown in FIG.
Display in . Also, after detecting the interrupt key in step 106 in subflow F and saving data such as numbers in step 105, subflow G
Determination of the end mode in (steps 65 to 7)
In step 2), the data saved in step 105 is recalled again to the memory SET, COPY, etc. in the RAM (step 69). The interrupt data is saved and saved in the free RAM location (SET1, SET2
etc.), so the interrupt data is displayed in segments as described above. The cassette data is output as a UL signal in step 77 and contributes to the display (lower display when UL is 1). Further, at step 35 in subflow H, a switch on the platen is turned off, and at step 55, the display is turned off by lighting. Also, in subflow G, when a serviceman call signal is detected in step 40, a copy start signal is sent.
STAT, ADF enable signal DFE is turned off and segment display is repeated (steps 42, 43') to disable key entry. Among these, the timer subroutine has a blinking duty ratio higher than that of only the subroutine so that the display has the same brightness as when not called. Therefore, it is possible to make the warning brighter than usual to make it more noticeable. Blank exposure signal S ₈ and AC transformer control signal S ₁₀
5-3 describes the procedure for decoding the copy status and determining the process sequence mode in relation to
This will be explained with reference to FIG. As shown in the diagram above, these two signal states change in the order of ○ta → ○a → ○ka → ○sa → ○ka → ○sa → ○ka → ○a → ○ta. By monitoring this flow, the management controller _Q1 grasps the copy status and determines the key entry and ADF enable conditions. In particular, the management controller checks the count up of the copy counter at the moment ○a, which is the point at which copying starts, and at the moment ○b, when the optical system switches from forward to reverse, which is the point at which the copy cycle ends, it enters the rear rotation cycle. It is now possible to capture the moment when all the copying operations are complete. The transition of this normal copy state is shown below. As a result, the first stationary zone, first copy circle zone, post-rotation zone, second stationary zone, and second copy circle zone of the process sequence are determined as shown in FIG. 18, and key entries, displays, etc. are controlled. A flowchart will be used to explain how the above termination is specifically carried out on the management computer _Q1 . It is shown in steps 40-79.
The time flow of ○ta, which means the first stationary mode, is 4.
0-44-61-63-64-78-79-73
It is a flow that passes through. That is, in step 44 it is determined whether the blank signal _S8 from the sequence computer _Q2 is off, in step 61 it is determined whether the AC transformer signal _S10 is off, and in step 63 it is determined that the F/A is in the time zone. Stored in RAM as . Since F/C, F/S, and TOP have not been set, a DF enable signal is output from output port 3 in step 79. Next, the moment when copying starts ○B is detected using the F/A as described above in the flow of 40→44→45→46→47→48. That is, the blank signal S ₈ is turned on.
Determine whether AC transformer signal _S10 is off (Step 4)
4, 45), set the F/C, and proceed to step 1.
Set the copy indicator to 0 at 22. Next ○ That moment was 40 → 44 → 45 → 46 → 47
The flow passes through →49→. Next, the flow in the pre-rotation mode ○ is 40 → 4
4→45→56→57→4, that is, in step 45, it is further determined whether the AC transformer signal is on, and in step 56, the F/G is stored. The time period for the next forward mode ○sa is 40 → 44 → 61
→62→4, and that this section is stored as F/B in step 62. At the moment of switching from ○ to ○ (when the optical system is reversed), ○ is a blank signal, and the AC signal is on, so use the F/B set in the above ○ position to 40-44-45-56.
-Detected on route passing through -57-58-59.
Accordingly, the copy counter is +1 and it is determined whether it matches the set counter (step 5).
8,59). When copying is repeated when they do not match, the time period of ◯➝◯➝◯➝◯ is repeated, and the operation of incrementing the copy counter by 1 is continued. Here, if the copy cycle ends when the number of sets is completed, the stop key is turned on, etc., and the copy cycle starts after rotation, create a time period of ○ for two clocks from the moment of ○B, and then reach the time of ○C. There is. At the moment of ○C, use F/G step 49, which remembers that it is within the ward, and move to 40-44-4.
5-46-47-49-50 and outputs a DF enable signal (step 53) if the start mode is not detected. Continue ○ During that time, we will take the same route as ○ above. Then, I remember that the moment ○2, which is the moment when the copying operation stops, is after ○. F/
40-44-61-63-64-6 using C
It is detected on a route that passes through 5. (Delay determination of termination mode) Turn off AC transformer control signal _S10 (voltage switching)
I will explain the reason why it is slightly delayed from the moment of ○○. The copy process by the sequence controller is continued by the copy command signal STAT from the management controller _Q1 , and at the time of ○B, the sequence controller determines whether the copy command signal STAT from the management controller is 1 or 0. If it is 1, continue the copy operation, if it is 0,
Enter the post-rotation mode. However, from the management controller side, after completing step 3, which involves detecting the moment of ◯◯, performing a copy count in step 58, and making a judgment in step 57, it sends a copy command signal STAT to the sequence controller. There will inevitably be a certain amount of time delay before it is released. That is, there is a delay in determining whether the copy counter and set counter match and resetting the copy command signal. Therefore,
If the sequence controller looks at the pre-reset copy command signal held by the management controller at the moment of ○/ro, it will continue to judge it as 1 and execute the copy cycle, causing an inconvenience. Therefore, the sequence controller determines the copy command signal at a time delayed by two clocks (approximately 11 msec) from the moment of ◯◯. And at this point, the copy command signal from Q ₁
If STAT is 1, the forward clutch _CL1 is fully turned on again to execute a copy cycle, and if it is 0, the AC transformer control signal _S10 is reset, one component voltage of the AC charger is lowered, and a post-rotation cycle is executed. The management controller Q 1 determines whether the post-rotation cycle occurred due to copy interruption mode (no paper, no cassette), no key counter, etc., or copy end mode (copy counter counting up, stop key on, _etc. ). Explain the points to be judged. As is clear from Figure 4, the management controller
_Q1 has no input information for determining whether copying should be interrupted, all of which is input to sequence controller _Q2 . In other words, a cassette paper out signal PEP, a cassette signal, . . . , a wait signal WT, etc. are input to ports 14-10. On the other hand, all the information for determining whether or not the copy end mode is in effect is stored in the management controller _Q1 . That is, it is clear from the fact that the STOP key is input to port 1 and the count-up signal of the copy counter COPY is determined by _Q1 . Therefore, in the case of copy interruption mode, the management controller Q ₁ is activated when ○ha is reached after 2 clocks of inversion.
The sequence controller _Q2 unilaterally resets the AC transformer control signal _S10 even though the copy command signal STAT of You can tell when it's entered. In other words, in the flowchart, the moment ○c is step 4 as mentioned above.
Detected at 9-50. Since the F/H copy command signal flag has not been reset, the copy command signal is still set to 1 even at point ○c in the copy interruption mode. Therefore 51-52-4
Execute the steps. Among them, step 52
In this case, F/Stop is provided to remember that the copy interruption mode is in effect, and setting this also resets the copy command signal (STAT) and F/H. On the other hand, when the STOP key is pressed during copying, the copy command signal (STAT) and F/H are reset at that point. That is, in entry flow F, this is done by the route of steps 98-99-100. Also, when the copy counter and the set counter become equal at point ◯, the copy command signal and F/H are similarly reset at that point. That is, in flowcharts G and F, 56-57-58-59-
Do it with a route of 60-100. Incidentally, in step 60, an ADF enable signal is output. Therefore, in the case of the copy end mode, the copy command signal and F/H are reset before reaching ○c, so step 49-50- is executed as a judgment at the time of ○c.
Take route 51-53. Therefore, the copy end mode is determined in the subsequent sequence without setting F/STOP. Normal copy operation using ADF enable signal (DFE) control and ADF standby signal (STB) signal,
Explain ADF copy operation. The ADF basically starts working at the end of its copy cycle (at the end of the optical system's advance for scanning), moves the original onto the platen during the post-rotation, omits the rest of the post-rotation, and immediately The copy speed is increased by entering pre-rotation for the next copy. Therefore, the ADF enable signal means that it is okay to activate the ADF from the management controller.
DFE must occur at the time of ○c above, taking into consideration various conditions (such as in which cases ○c occurs). Also, this ADF enable signal is reset at the start of the next copy. These various conditions show the following cases. (1) First quiet time period (1)-1 After turning on the normal MSW, all keys are accepted and the DFF signal is set. (1)-2 All keys do not work after MSW is turned on while jammed. After resetting the jam, it is the same as (1)-1. (1)-3 All keys do not work after turning on the MSW while the serviceman is calling. (2) At the time of first copy (2)-1 When using the copy button, set the copy counter to 0 and reset the DFE signal. (2)-2 Same as (2)-1 when the original standby signal STB is turned on. (3) Copy cycle (3)-1 During normal copy cycle (or after releasing jam, after STOP key, after paper out, COPY
(After count-up) Only interrupt keys and STOP keys can be accepted. However, once an interrupt key is accepted, all keys will not be accepted until the main motor stops. (3)-2 Only the STOP key can be accepted during an interrupt copy cycle. (3)-3 Only the STOP key can be accepted during the ADF copy cycle. (4) Post-rotation cycle, (5) Second stationary period, (6) Second
Entry acceptance and enable output during copying are shown in Tables 1, 2, and 3, and are therefore omitted here. To explain the above operation using a flowchart, (1)-1 operation is 40-44 in flow G.
-61-63-64-78-79, the enable output is set by the step all the time while passing through this loop (first rest time). The operation (1)-2 is 15-20 in flow H.
-21 to 34, and the DFE output is always reset at step 31. The operation of (1)-3 is 40-41- in flow G.
42-43, and the DFE output is always reset. (2)-1 operation is 40-44-45-46-47-48-120- in flow G and flow K.
122-123-124, and the DFE output is reset at step 123. (2)-2 operation is 15-16-17-35-37
-38-39-111-94, and the copy command signal STAT is output (step 94). Note that the standby signal STB from the ADF is detected at 38. (3) Since the copy flag F/COPY is 1 in each flow during the copy cycle, no entry set is performed except for the interrupt stop entry. (4) Regarding the key entry and ADF enable during the post-rotation cycle. (Table) 1, Table 2, and Table 3, ADF enable is set when the copy counter COPY counts up and
It is set only when the STOP key is pressed, and this is done by determining that the F/H, that is, the copy start signal, has already been reset at the point in time. Therefore, steps 50-51-52 are passed, F/H is determined at 51, and enable signal DFE is set at 53. Further, during the copy cycles of Tables 2 and 3, the interrupt key is not accepted, but during the copy cycle of Table 1, the interrupt key is accepted. When the interrupt key is pressed, F/H goes to steps 106-1.
It is reset by 00, and at the time of ○c, F/H is already set to 0 and step processing is performed. Therefore, it passes through steps 50-51-53 and F/H at 51.
is determined and DFE is set in step 53. Also, as is clear from Tables 1 to 3, if you press the clear key after canceling this mode while copying is stopped in stop mode (no paper, no key counter, jam, etc.), the original on the document table will not be copied. Set ADF enable output as canceled. This operation is performed after executing steps 135-136-3 in entry flowchart E and then 40-44-61-63-64- in flowchart G.
This is done when executing 78-79. That is 3
F/ remembers that there is a STOP mode in
Reset STOP, then F/STOP=78
0 and sets DFE at 79. Accordingly
ADF raises claw 86 and belt motor (belt 89)
to eject the original. Regarding the operations of (3)-1 and (3)-2. F/COPY indicating that it is a copy cycle is set at the moment shown in Figure 5-4, ie, at step 48. The fact that the keys 0 to 9, C, and top (cassette) are not entered while F/COPY is 1 is clear from the jumps from step 130 to 4, from step 147 to 4, and from step 159 to 4. For F, STOP, interrupt, and copy keys, please refer to step 8 in the flowchart.
0-81-82-83-84-85-86-10
1 and is detected between 101 and 111. Here, F/E is a flag indicating the post-rotation state, and is set at the time point ◯C (step 50). Therefore, the route passing through 101-108 indicates during the post-rotation, the route passing through 101-102-106 indicates during the copy cycle, and the route passing through 101-102 indicates during the copy cycle.
The route passing through 2-103 indicates stationary. Therefore, the keys that are accepted during the copy cycle are the interrupt key at step 106 and the STOP key at step 98. If an interrupt key is accepted during the copy cycle, F/interrupt is set in step 107. Then step 12
Since flags 6, 143, 155, and 84 are determined to be F/interrupt, entries are not accepted and all jump to 4. Therefore, no keys will be accepted. After finishing the post-rotation and stopping the main motor, step 65 to step 66-70-71-7
2 and executes step 105, the number of sets, number of copies, number of cassettes, and each flag are saved to another location in the RAM, and the interrupt lamp 74 is turned on.
Therefore, since the display is set to 0 after confirming that the paper has been ejected, the jam determination and the number of copies can be accurately determined. (3) Regarding -3, the detection of the original STAND-BY signal from the ADF is performed in step 38, and the fact that the subsequent copy cycle is in ADF mode is stored as F/DF in step 39. This F/DF is set during the copy cycle and post-rotation period, and is reset at the time of ◯◯, that is, at step 65.
And 8, 9, C, the upper key is step 128
Route to -129-4, step 128-1
Route to 30-4, also step 145-14
Route to 6-4, steps 145-147-
The route to step 4, the route to step 157-158-4, and the route to step 157-159-4 all jump to step 4, so the key flag is not set and cannot be accepted. Furthermore, F,
As for STOP, interrupt, and copy keys, steps 86-87-4 are executed during post-rotation, so all keys are similarly not accepted. Also, during the copy cycle, only the STOP key is accepted at step 98, either by passing through steps 86-87-88-98-99-100 and jumping to step 4. This minimizes the complexity of various operations and displays in ADF copy. It is also possible to accept an interrupt key at step 98 and to proceed to step 106 when the interrupt key is received. (Correction of jammed sheet number display) In FIG. 4, the jam signal of the sequence controller Q ₂ and the second operation section display marks 69, 68, 67 and 66 are displayed blinking. In FIG. 5, when the paper feed port sensors 36 and 37 detect a paper feeding error or skew, and when a jam is detected by the timing check, a jam signal 4 is generated.
When a jam in the transfer section is detected by the timing check in 3, the jam signal 3 is generated.When a jam in the fixing section is detected (delay to the sensor 40) by the check in 4, the jam signal 2 is generated.When the timing check in 5 is detected, a jam signal is generated in the discharge section. When (retention on sensor 40) is detected, jam signal 1 is set and output. Therefore, the copy counter COPY is + when the optical system is reversed (at the moment of ○).
Since the number is 1, the number to be subtracted differs depending on whether the jam occurred before or after that moment. That is, as can be seen from Figures 5-1 and 5-2, for each jam signal output, a maximum of 2 is felt when half-size paper is retained at the exit, and the paper feed section,
When the transfer section is jammed, other conditions must also be considered.

[Table] That is, the subtraction for guaranteeing the number of copies due to jamming is affected by three factors: the jammed location (jammed signal ~), the paper size, and the timing during post-rotation (DC transformer switching timing). These subtractions are performed according to flowchart H. In FIG. 4, jam signals ~ are input to ports 0 to 3 at the predetermined timing of set pulse _I1 , so when any of these jam signals is set, 15-20-21- in FIG.
The routine that passes through 34 and returns to 15 is executed.
22 is provided to prohibit subtraction when the copy counter COPY is 0. Paper feed jam (paper feed error, skew) and transfer delay jam signal are not subtracted in any case, so 15-20-21-22-23
Execute -29-30. In the above case, 23
-1 at -24 and -1 at 25-26-27-28-30 for a total of -2. In the case of 23-
-1 for the route 24-25-26-27-30. In the case of , the route is 23-24-25-30, which is -1. The case of ,, is 23-2
Execute 9-28-30 and increment by -1. In the post-subtraction display step 32, the contents of the counter COPY are displayed in segments. In addition, steps 9 and 32
SUBDISP is RAM counter SET, counter
This is a well-known subroutine for dynamically displaying COPY contents on segment displays 72 and 73. (Diagnosis of machine failure during special time periods) One of the purposes of the present invention is for a service person to determine whether a paper jam occurs due to a failure of either mechanical parts or electrical parts when a failure alarm is received from a user. Furthermore, if it is an electrical component, it is possible to give a clear warning as to which unit is malfunctioning, making it easy to instruct service personnel about which parts to bring, and making it easier for the user to check for malfunctions. The purpose is to significantly reduce operating time. Specifically, the electrical parts to be checked in this example are the ones that will cause a jam display if a malfunction occurs in them, and are the upper skew sensor 37 (hereinafter referred to as , as there are three), and the lower skew sensor 37 (hereinafter referred to as . Row sensor 36 (hereinafter referred to as , since there are three), paper transfer sensor 35, second registration sensor 39, paper ejection sensor 4
It is 9 of 0. Another purpose is to indicate by number on the segment display 72 of the set counter which printed circuit board has a damage sensor attached. Also, during normal copying, these inner paper sensors 36 and 37 are used to detect paper feeding errors and skew, and 35 and 40 are used to detect paper jams, so if you want to check these sensors themselves, use them at times other than the copy cycle. This is done by putting information into the machine itself at a special time. At that time, kill the jam detection function,
To check the operating status of these sensors,
Feed one sheet of paper from the top, complete the copying operation,
Next, by automatically feeding one sheet from the lower stage and executing a copying operation, the movement of each sensor that should be activated during this process is monitored by the management controller. The malfunctioning printed circuit board detected by the monitor is indicated by a predetermined number on the set number segment display section 72. This specific operation is carried out by pressing the self-diagnosis button 49 provided at the relevant location on the outside of the entire structure in Fig. 1, the lamp of the self-illuminated key switch will light up, and the display on the segment indicators 72 and 73 that had been lit up to that point will light up. disappear. In FIG. 4, when the diagnostic switch 49 is pressed, _Q1 detects that the input port 9 of the management controller _Q1 has become 0, and sets the output to the output ports 4 and 5 as a diagnostic mode. This lights up the lamp provided on the diagnostic button as shown in Figure 7, and also lights up the input port ₉ of the sequence controller Q2.
This is a jam reset terminal, and if the case door is closed and the door switch is left on, the sequence controller _Q2 will determine that a jam has been killed by setting this port to 0. In other words, in Figure 4, the switch signal
The SWS is input and the jam reset signal RS is input to omit paper trouble detection.
Further, the output port 19 for zero suppression shown in FIG. 4 is also set, and the segment display sections 72 and 73 disappear. This will be explained using the flowchart of FIG. 5. First, when the diagnostic switch 49 is pressed, steps 155-156-
When the route 157-158-159-160 is being executed, its on state is detected at step 160 and the step jumps to FIG. 15-4. The management controller immediately sets the output of the output port 19 to erase the segment display sections 72 and 73 (step 176), and then performs steps 177-178-
179, the cassette is designated as the upper stage, and the diagnostic lamp lighting output (output port 5) is set. After that, in step 180, wait for the copy key to be pressed, and if it is input, in step 181, set the copy command signal STAT to output port 1,
Sequence controller Q ₂ reads this signal and starts copying. At 182, the management controller detects the rising edge of the blank exposure signal _S8 and detects whether copying has started. When it is detected that the process has started, the output state of the second registration sensor 39 (FIG. 11) is first determined in step 184. This sensor output should still be at level 1 at this point, but if it is 0 in the operating state, it should be 221.
-219-220 route and displays the failure as a segment. On the other hand, if normal, then 186
It is detected that the blank exposure signal _S8 becomes 0.
At this point, as is clear from the time chart in FIG. 5, the fed paper has reached the top of the upper skew sensor and has already entered the first copy cycle. Therefore, in step 187, a copy command signal is sent.
STAT is reset and the digit output flag of output port 13 is set, and 188, 189,
At 190, the operating status of each skew sensor is checked. These sensors should normally be at 0 level when detecting paper, and when they are at 1 level, they are considered to be malfunctioning. In other words, when the skew sensor is abnormal, 188-2
"3,0" with the route 22-219-220,
When the skew sensor is abnormal 189-223-21
"1,0" on route 9-220, 190-224-219-220 when skew sensor is abnormal
Display "2,0" in the root of . If the upper skew sensor is normal, 188~192
Execute. . After this, if normal, the blank exposure signal is 0.
The second registration sensor should be operated by the optical system and output the 0 level within a time period of 184 drum clocks from the time when the second registration sensor reaches 184 drum clocks. Accordingly
184 is stored in the counter area CNT of the RAM, and the subtraction count and output detection are performed in steps 193-197 for sensor checking. If the registration signal RG becomes 0 within the time until CNT becomes 0, a carry flag is sent via route 194-195.
Carry is set. It is determined as normal at step 198 after 184 clock counts.
If the output level of the registration sensor is not detected within this period, steps 198 to 225-
219-220 are executed and "6,0" is displayed. Also, from FIG. 5, the time when 184 drum clocks are counted is the time when the first sheet of paper is operating the paper transfer sensor 35, and the sensor 35 should be outputting 0 level. Therefore, in step 200, the operating state of the sensor is determined, and if it is level 1, it is level 2.
00-226-219-221 and then "4,1"
Display. If it is 0, execute steps 201 and subsequent steps. The next step 202 is to detect that the sequence has reached the point in time shown in Figure 5-3, and this is determined by the AC signal from the sequence controller _Q2 . After this
As is clear from FIG. 5, the time when 200 drum clocks are counted is when the copy paper has reached the paper discharge sensor 40. Therefore, the count is 203~2
The operation state of the paper discharge sensor is checked in step 208. Normally, this sensor outputs 0 level at this point, but if it is 1,
Consider it a failure and call 208-227-219-220.
Execute to display "5,0". If it is 0, it is assumed to be normal and the process proceeds to steps 209-210. 210 is a step in which the completion of the last copy operation is detected by turning off the blank exposure signal. 211 switches the cassette to the lower stage, generates the copy command signal STAT from output port 1 again, and sends the sequence controller
Start the copy operation by _Q2 . And 2
12 detects, as in the case of 186, that the blank exposure signal is turned off at the time when the copy paper reaches the lower skew sensor group 37. At that time, since the copy cycle has already started at 214, the copy command signal STAT is canceled and 214
At steps 5, 216, and 217, the lower skew sensor is checked. If the value that should have been 0 at this point is 1, it is determined that there is a failure, and if the lower skew sensor is malfunctioning, 215-228-219-2
20 route and "13,0" when the same is out of order 2
Route 16-229-219-220 “11,
0”, 217-230-21 when the same is out of order.
Display "12,0" on the route 9-220. If all the sensors have not failed in the process up to this point, please use the 218-219-220 route.
00” is displayed. Copy counter display 7
3 displays 00 (step 219). FIG. 16 is a sequence control flowchart of the ADF shown in FIGS. 1 and 2, and this flow program code is stored in the ROM of the ADF controller _Q3 shown in FIG. Turn on the ADF main switch and input 15V (step 0), turn on the mode switch to determine the signal MODE (step 1), and when the signal MODE is 1, determine the enable signal DFE from the copier (step 2), sensor 8
If 5 does not detect the original, it is determined whether the sensor 90 of the bucket part detects the original (steps 3 and 4), and when the original is placed, the feeder motor and setter motor are turned on and the rollers 87, 88 and belt 89 are operated. The original is fed onto the platen 14 (step 5). Sensor 84 without skewing
When passing through, the feeder motor turns off and roller 8
7 and 88 and when the sensor 85 detects the original, the setter motor is turned off, the belt 89 is stopped (steps 6 to 9), and a standby signal STB is output to the management controller _Q1 . The management controller _Q1 detects this and outputs a start signal STAT to the sequence controller _Q2 to start the copy process cycle (step 10). When copying starts, the enable signal DFE is reset, which also resets the standby signal STB.
(Steps 11 and 12). When the copying of the set number by the key is completed, the post-rotation enable signal DFE is output from the management controller _Q1 as described above (step 60 in Fig. 15-3), so the existence of the original is detected by the bucket part sensor 90. To eject the original on the platen and feed the next original, turn on the setter motor and feeder motor signals SM and FEM, and turn on the plunger signal.
Turn on PLS and lift the nail (steps 13-1)
5) Check the feeding of the next original and turn off the feeder motor (steps 17, 18). When the previous original passes the sensor 85, turn off the PLS and lower the claw (steps 16, 20). When it reaches the sensor 85, it is detected and the setter motor is turned off (steps 19, 21 to 2).
3). Then repeat the previous copy operation. Since the management controller _Q1 retains the set number without clearing it after copying is completed, each original can be copied as many times as required. When there are no originals in the bucket part, the setter motor is turned on and the plunger is turned on to perform only original discharge work, and after the sensor 85 passes through the original, the plunger is lowered, and when the completion of discharge is checked by the sensor 91, the setter motor is stopped and the system returns to the initial mode. By the way, enable signal after mode switch
If an original already exists on the platen 14 when the DFE is input, that original is ejected and the next original is fed and copied (steps 3 and 10).
~14,6,15). Therefore, when copying is finished using the stop key of the copying machine, or when copying is interrupted due to out of paper etc. and then the set number and number of copies are cleared using the clear key, the enable signal is activated as described above.
Since DFE is output from management controller Q ₁ ,
The original at the time of interruption is ejected. Note that when the ADF is opened and the original is manually set, a copy can be made using the copy button 54. After copying the set number, you can output the original by pressing the mode switch. Further, the signal of the mode switch can be maintained by a timer or the like so that it can be automatically discharged. Further, the ADF is provided with a stop key for interrupting the original feed, but this is made possible by providing a routine step for stop determination in step 11 to prevent the step from proceeding. Also steps 7 and 17
At step 5, when the sensor 84 does not detect the original transmission for a specified period of time or more, a jam display output is generated and the feed motor setter motor can be stopped. FIG. 17 will be explained with reference to the time chart of FIG. 5, which is a program flow chart for sequence control by the sequence controller _Q2 . When the CPU is powered on by the main switch, the RAM is cleared and the wait lamp is turned on (step 0). First, it is detected whether the jam reset signal RS is input together with the power supply signal SWS to determine whether to kill a jam in order to prevent a jam check step or the like, and if so, set a jam killing flag. (Step 1). When there is no jamming, paper is detected on the jam detection sensors 36, 37, 35, 40,
When there is paper, the sensor location is displayed blinking with the marks 65 to 69 on the operating section (FIG. 2) as described above (step 3). Do not perform this step when killing Jam. Next, it waits until the wait signal WT is detected and the wait is up, and even if the wait is up, the loop cannot be exited if there is no cassette or no paper in the cassette (step 3). When jamming, this routine is not executed and the wait lamp off signal WTL is output from _Q2 . The cassette signal designated by the stage is detected to determine whether it is full or half and each size, and each flag is set (step 4). Next, it detects whether the start signal STAT is output from the management controller _Q1 ,
When starting, a main motor signal S, a blank lamp signal S ₈ , a full surface lamp signal S ₉ , and a reverse signal S ₇ to set the optical system at the optical system stop position are output. If it is at the stop position, the primary high voltage signal _S11 is output (step 6). Then clock pulse CL
When it counts 30, it outputs an AC transformer signal S ₁₀ .
Strengthen one component of AC (step 7). Furthermore
After counting 312 clocks, it is checked again whether there is no cassette and no paper, and it is detected whether the start signal STAT is off, and when it is off, the signals _S1 , _S8 to _S10 are turned off and the process returns to step 1 (step 8). When the paper feed signal _S2 is not stopped, paper is fed from the cassette, and after 40 clocks are turned off, the first registration signal _S3 is turned on at the same time as the signal _S2 is turned off, and the second registration roller is activated at approximately the same timing. Feed paper towards. Next, count 54 clocks and turn on the halogen lamp 1.
6 is lit (step 10).During this time, the paper reaches one of the paper feed slot sensors 36 (signal CPOS ₁ ).
The number of drum clock pulses required to reach the other one (signal CPOS ₂ ) is counted (timer 4 is activated) and the skew feeding of the paper is checked. That is, when the number of clocks exceeds a predetermined number, it is determined that skew feeding is occurring, a jam signal is detected, and the next sheet feeding is stopped to interrupt the process. At half size, there is another sensor (signal CPOS ₃ ) located shorter than the other sensors above from the generation of CPOS ₁ .
The above skew check is performed by counting the number of pulses CL until reaching CL. Next, 23 clocks are counted after the lamp is turned on, and an optical system advance signal S ₆ and a developer drive signal S ₁₂ are output. However, voltage is gradually applied to the forward clutch to prevent shock (step 11). When the optical system leaves the optical system stop position, input the signal OHP, turn off the blank lamp signal _S8 , turn on the first registration roller signal _S3 again, and apply full voltage to the forward clutch to start scanning. (Step 1
2). Since the paper should be passing over the sensor 36 when the lamp is on, the sensor 36 is checked when the lamp signal is on, and if the paper is not detected, it is determined that there has been a paper feed error and a jam signal is output. Next, when the optical system reaches the registration sensor 39 and inputs the signal RG, it outputs the second registration roller signal _S4 (step 13). After 175 clocks have been counted since OHP was turned on, the size flag is determined and the full-size clock is counted to 157, signals S ₅ and S ₆ are turned off, the lamp is turned off, the forward movement is stopped, and S ₇ and S ₈ are turned on. Then, in order to move the optical system back, reverse movement is started and blank lighting is performed (step 14). This blank signal _S8 is input to the management controller _Q1 , and the copy counter COPY is incremented by 1 under the condition of 1 of the AC signal _S10 . As mentioned above, the management controller Q ₁ determines whether the copy counter is equal to the set counter SET of the RAM and determines whether the copy is completed. When they match, the management controller Q 1 turns off the start signal STAT and controls the sequence controller Q ₂ to rotate later. Move to mode. Q ₂ counts two clocks after S ₇ and ₈ are turned on, determines whether STAT is off, and turns off AC signal S ₁₀ for the reason described above. If the copy counter in _Q1 has not counted up and STAT is on, jump to the previous paper feed step 9 and continue copying. (Step 15). When STAT is on, count 150 clocks, turn off _S11 , turn off the DC transformer,
Count another 260 and turn off S ₁ . At this time, the voltage of the AC transformer gradually decreases and turns off as shown in FIG. 5, thereby preventing peak unevenness in the surface potential caused by sudden turning off (steps 16 and 17). Also, even if S ₁ is turned off, the drum will rotate slightly, so in anticipation of this, a 0.5 second timer is activated, and after that time, S ₈ and S ₉ are turned off to prevent potential unevenness when the drum is stopped. Step 18). Then, the jam killing is reset and jumps to step 1. During the above process, the timer T5, which operates for a limited time by counting the clock pulse DCP, is activated at the timing shown in FIG. 5. After the count-up, the presence or absence of paper on the sensor 35 is checked, and when there is no paper, a delay jam is output. Also, the timer _T2 is activated to check the presence or absence of paper at the sensor 40 after time-up, and output a delay jam when there is no paper. Also, the timer _T3 is activated to output a retained jam signal to the sensor 40 after the time has elapsed when there is paper present. The jam signal ~ is input to the management controller and becomes a condition signal for display subtraction as described above. And jam relay by either of this signal ~
Activate K ₁ (Figure 9) to input CPU power from the connector side. Therefore, the RAM state is maintained even if the door is opened or the main switch (MSW) is turned off. However, since other power supplies are cut off, the display disappears. When jammed, the process is completed and the process jumps to the post-rotation cycle 4 shown in FIGS. 5-4 to enter the second stationary state. When the reset switch 47 (FIG. 1) is turned on, the controller _Q2 reads the signal RS and turns off the jam output to clear the jam, and the paper feed section jam signal reads cassette-free and clears the jam. Also, when the start signal STAT from the management controller _Q1 is turned off due to a stop or call signal, etc., or when the sequence controller _Q2 detects that there is no cassette and no paper,
At that time, the process is executed to the end without interruption, and only after the post-rotation is completed is the standby (standstill) state established. By the way, 18-1~ showing the key entry conditions
In FIG. 18-3, the post-rotation zone indicates whether or not entry into the second stationary zone is possible and whether or not an enable signal is available.
X means the key is not accepted, O is the key accepted,
indicates the display change at the start of the second copy. × means there is no causal relationship, COPY→COPY starts copying with the display as is, and 0→COPY sets the display to 0 and starts copying. For example, in Figures 18-2 and 1 and 2, if you turn on the copy key after interrupt copy (after the interrupt set number SET and interrupt copy number COPY match after the stop key is interrupted), the copy number before the interrupt will be the same as the set number. If they match, copying starts from display 0, but if they do not match, the copy number is displayed and then copying starts. This is the same even when the standby signal STB is input from the ADF controller to the management controller after interrupt copying. After interrupt copying is interrupted due to out of paper, etc., in step 3, the number of copies made at the time of interruption (regardless of the clear key) is displayed and copying is resumed. When the stop key is turned on during interruption, the above 1 is executed. At 4 in Figure 18-1, if normal copying is interrupted by inputting the interrupt key, the
Outputs ADF enable signal DFE in stationary band.
Numerical keys (numeric keys) are accepted only in the second stationary zone. Incidentally, at this time, the reception of the numeric keypad may be made possible after the paper has completed passing through the discharge section sensor 40.
No further interrupt keys will be accepted, but they will be accepted after canceling with the stop key. In addition, in 5, if the jam is interrupted, the interrupt key, stop key, clear key, up/down key is accepted after the jam is cleared in the second stationary zone, the numeric keypad is accepted by the clear key after the jam is cleared, and the DFE signal is accepted by the clear key or the clear key after the jam is cleared. Output after interrupt key. As described above, according to the present invention, it is possible to forcibly eject the original at the exposed position by inputting a command from the key input means that can clear the sheet count data when the copying operation is interrupted due to abnormal sheet conveyance or no sheet. This saves the operator the trouble of manually removing it and allows the user to quickly resume copying.

[Brief explanation of drawings]

Fig. 1-1 is a sectional view of an example of a copying machine according to the present invention, Fig. 1-2 is a sectional view of an ADF, and Fig. 2 is a sectional view of an example of a copying machine according to the present invention.
Fig. 3 is a control block diagram of the device according to the present invention, Fig. 4 is an operation control circuit diagram of Fig. 1, and Figs. 5-1 to 5-4 are Figs. 1 and 4. Figure 6 is a wait signal generation circuit diagram, Figure 7 is a jam reset diagnostic signal generation circuit diagram, Figure 8 is a sensor signal generation circuit diagram, Figure 9 is a power supply circuit diagram, Fig. 10 is a halogen lamp circuit diagram, Fig. 11 is a timer circuit diagram, Fig. 12 is a cassette circuit diagram, Fig. 13 is a sectional view of the cassette insertion section, Fig. 14-1 is a driver diagnostic circuit diagram, and Fig. 14-1 is a sectional view of the cassette insertion part. Figure 2 is the main motor and clock source diagnostic circuit diagram, Figure 14-3 is the operation time chart of Figure 14-2, Figure 14-4 is the electrometer diagnostic circuit diagram, and Figure 14-5 is the fuse detection circuit. Figures 15-1 to 15-4 are management control flowcharts, Figure 16 is ADF control flowchart,
FIG. 17 is a sequence control flowchart, and FIGS. 18-1 to 18-3 are diagrams showing conditions such as key entry. In the figure, Q ₁ ... Management controller, Q ₂ ... Sequence controller, Q ₃ ... ADF controller,
52...Numeric keypad, 54...Copy button, 55
... Interrupt key, 72, 73... Segment display, 65-69... Jam display.

Claims (1)

[Scope of Claims] 1. Document conveying means for feeding a document to an exposure position and ejecting the document from the exposure position after completion of exposure; setting means for setting the document conveyance means to an operation mode; a signal generating means for generating a signal indicating a desired image; a storage means capable of storing a plurality of sheets; a copying means for copying an original image onto a sheet fed from the storage means by exposing the original at the exposure position; data input means for inputting data related to the number of copies; storage means for storing the number data inputted from the data input means; key input means capable of clearing the number data stored in the storage means; storage in the storage means. a first control means for operating the document conveying means and ejecting the document from the exposure position after a desired number of copy operations based on the data set; When the operation is interrupted due to abnormal sheet conveyance or no sheet in the storage means,
When an input command is received from the key input means, a signal generated from the signal generation means is determined, and if the signal indicates that the original is at the exposure position, the original transport means is activated in response to the input command. a second actuator for forcibly ejecting the original from the exposure position;
A copying apparatus comprising: control means.